8.docx - The public key infrastructure(PKI needs to handle the revocation of compromised keys Currently there are two basic approaches The first one

8.docx - The public key infrastructure(PKI needs to handle...

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The public key infrastructure (PKI) needs to handle the revocation of compromised keys. Currently, there are two basic approaches. The first one uses the certificate revocation list (CRL). The CRL is published periodically (for example, 8:00am every day). It contains the public key certificates that have been compromised. Another approach is to use Online Certificate Status Protocol (OCSP). Please study how OCSP works. Then write about 0.5 page to discuss the working procedure of OCSP, and the advantages and disadvantages of OCSP over the CRL. The OCSP or Online Certificate Status Protocol is used for learning about the status of a desired certificate in the internet. The client can determine the state by sending a request to the system and receive the revoked or valid status of the identified certificate. This approach has both advantages and disadvantages in comparison to CRL. As the information is provided by contacting a third party, some may find it hard to be trusted because of the privacy
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Unformatted text preview: concerns and the possibility of a replay attack. However, the real-time information that is provided by the OCPS can be a great help for time sensitive cases which are needed to be discovered as soon as possible. This timely manner is also applicable to revoking the certificates status so less resources of the network is used because less information is needed to be stored. Another beneficial option of the OCSP for its users is the extra time that is provided for the users with expired certificates to have server access, which makes it convenient. A better bandwidth managing that is due to retrieving the CRL on behalf of the client is another benefit of the OCSP system for the client. On the other hand, this will transfer the overhead to the OCSP responder on the busy websites. (The information was gathered online and re-written in my own words) ...
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